Of V tgetathn. 323 
eedage, when their quantity of oil is increafi 
ed with their greater maturity. 
Whence we find that nature’s chief bufi- 
nefs, in bringing the parts of a vegetable, 
efpecially its fruit and feed to maturity, is 
to combine together in a due proportion, 
the more a&ive and noble principles of ful- 
phur and air, that chiefly conftitute oil, 
which in its mod refined ftate is never 
found without fome degree of earth and 
fait in it. 
And the more perfed this maturity is, the 
more firmly are thefe noble principles united. 
Thus Rhenifh Wines, which grow in a more 
northern climate, are found to yield their 
Tartar, i. e. by Exper. 73. their incorpora- 
ted air and fulphur in greater plenty, than 
the ftronger Wines of hotter countries, in 
which thefe generous principles are more 
firmly united : And particularly in Madera 
Wine, they are fixt to fuch a degree, that 
that Wine requires a confiderable degree of 
warmth, fuch as would deftroy the more 
delicate texture of many other Wines, to 
keep it in order, and give it a generous 
taftei and *tis from the fame reafon, that 
fmall French Wines are found to yield 
more fpirit in diftillation, than ftrong Spa- 
nijh Wines. Y % But 
